Bovine abortions attributable to Listeria ivanovii: Four cases (1988-1990)

Amy V. Alexander From the California Veterinary Diagnostic Laboratory System, School of Veterinary Medicine, University of California, Davis, CA 95616.

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Richard L. Walker From the California Veterinary Diagnostic Laboratory System, School of Veterinary Medicine, University of California, Davis, CA 95616.

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Bill J. Johnson From the California Veterinary Diagnostic Laboratory System, School of Veterinary Medicine, University of California, Davis, CA 95616.

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Bruce R. Charlton From the California Veterinary Diagnostic Laboratory System, School of Veterinary Medicine, University of California, Davis, CA 95616.

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Leslie W. Woods From the California Veterinary Diagnostic Laboratory System, School of Veterinary Medicine, University of California, Davis, CA 95616.

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Summary

During a 3-year period, 4 cases of bovine abortion attributable to Listeria ivanovii were diagnosed from 243 bovine fetuses submitted for diagnostic evaluation. Listeria monocytogenes was isolated only once from a bovine fetus during this same time period. Pathologic findings were similar to those seen in abortions attributable to L monocytogenes. Consistent management factors were not recognized and breed susceptibility was not apparent. Listeria ivanovii is most often associated with abortions from sheep and is rarely reported from cattle. On the basis of findings in this study, L ivanovii must be included as a potential cause of bovine abortions.

Summary

During a 3-year period, 4 cases of bovine abortion attributable to Listeria ivanovii were diagnosed from 243 bovine fetuses submitted for diagnostic evaluation. Listeria monocytogenes was isolated only once from a bovine fetus during this same time period. Pathologic findings were similar to those seen in abortions attributable to L monocytogenes. Consistent management factors were not recognized and breed susceptibility was not apparent. Listeria ivanovii is most often associated with abortions from sheep and is rarely reported from cattle. On the basis of findings in this study, L ivanovii must be included as a potential cause of bovine abortions.

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